Dust collecting device for pneumatic cleaners



D. B. REPLOGLE DUST COLLECTING DEVICE FOR PNEUMATIC CLEANERS July 19,1938.

Original Filed July 20, 1931 Inventor A liorney Patented July 19, 1938PATENT OFFICE DUST COLLECTING DEVICE FOR PNEUMATIC CLEANERS DanielBenson Replogle, Berkeley, Calif., assignor to The Ohio Citizens TrustCompany, Toledo, Ohio, a. corporation of 0hio,as trustee ApplicationJuly 20, 1931, Serial No. 552,050 Renewed October 20, 1937 5 Claims.

The invention relates to pneumatic cleaners and dust collecting devicestherefore, and more particularly to the connections between the bag andfan outlet pipe of the cleaner.

The invention will be more readily understood by reference to theaccompanying drawing in which:

Fig. 1 is a perspective view on a reduced scale, illustrating one formof suction cleaner with a 5 dust collector bag attached thereto;

Fig. 2 is a side elevational view on an enlarged scale, partly incentral cross section, and with parts broken away, illustrating onemeans for attaching the dust collector to the cleaner, and

Figs. 3 and 4 are detail views on a further enlarged scale, illustratingthe attaching means.

Figs.'1 and 2 illustrate the dust collector applied to a suction cleanerof the type shown in my application Serial No. 499,575, filed Dec. 2,1930. As shown, the cleaner includes a suction producing fan 20, a floortool 2 I, a suction handle 22, a valve 23 for operatively connectingeither the fioor tool or the suction handle with the source of suction.A fiexible connector 24 is shown interposed between the valve 23 and thesuction handle 22, and a like flexible hose pipe 25 is interposedbetween the exhaust outlet 26 from the fan casing and the dust collectorI0.

Both the connectors 24 and 25 are preferably deis suitably secured as bya rivet 29 a resilient or yielding detent member 30, having an outturnedclasp 3| at the end thereof. A portion 32 of the detent member isnormally yieldingly held in contact with the groove 21 by the resilienceof the material of which the detent is formed.

The dust collector bag may be secured to the cleaner by drawing themouth of the bag over the nipple 26a, as illustrated in Fig. 3, thedetent serving to temporarily hold the same in position. An air-tightfit between the bag and nipple may be obtained by passing a strap 33 ofleather or other suitable material around the mouth of the bag andthrough the narrow neck 34 formed in the detent 30. The strap forcespart of the material of the bag mouth into the circumferential groove 21in the nipple, and this groove together with the detent 30 serve toprevent the strap and bag from slipping. The ends of the strap may besecured together in any suitable manner, thus' providing a simple andeffective air-tight connection between the dust collector and theconnector 25 which communicates with the fan exhaust.

I claim: l

1. The herein described means for attaching a dust filtering element tothe discharge pipe of a suction cleaner which comprises a. nippleoperatively connected to the'discharge pipe, said nipple having acircumferential groove therein, a spring finger carried by and extendinglengthwise of said nipple and having a bent-over portion normally forcedinto said groove, and a strap for securing the mouth of the dustcollector over said nipple, said strap passing around said finger andbeing retained thereby, and forcing a portion of said bag mouth intosaid groove.

2. In a suction cleaner having a fan discharge nozzle, a dust collectorbag having an inlet mouth, and means for operatively connecting theinlet mouth of said dust collector bag to said discharge nozzle, saidmeans comprising a nipple in communication with said discharge nozzle,and having a circumferential groove adjacent the end thereof, a springfinger secured to said nipple and having a bent-over portion normallyheld in said groove by the resilience of the material of which thefinger is composed, the mouth of said bag being'fitted over the groovedend of said nipple, and detachably held in position by the bent-overportion of said finger, and a strap passing over said bent-over portionof the finger and about the neck of the dust collector bag and servingto retain the same in position,

3. A dust collector bag adapted for use on a suction cleaner having anexhaust outlet pipe, said bag having a fiexible mouth, and means forconnecting said dust collector bag to said pipe, said means comprising acircumferentially grooved connector, over which connector the mouth ofthe bag passes, a spring finger extending lengthwise of said connectorand having a portion overlying the mouth of the bag, and a strapsurrounding the bag mouthand forcing the material of said mouth intosaid groove, said finger havinga neck for retaining said strap toprevent movement thereof lengthwise of the connector.

4. A dust collector bag adapted for use on a suction cleaner having anexhaust outlet pipe, said bag having a flexible mouth, and means forconnecting said dust collector bag to said for connecting saiddust-collector bag to said pipe, said means comprising acircumferentiaily grooved connector, over which connector the mouth oithe bag passes, a strap surrounding the bag mouth and forcing thematerial of said-mouth into said groove, and means carried by saidconnector for holding said strap in place, said means comprising aspring finger extending lengthwise oi the connector and having a portionwhich fits over the mouth of the bag and having a. hooked portion toretain the strap against lengthwise movement with reference to the con-10 nector.

DANIEL BENSON REPIDGLE.

